We’ve entered some profoundly unfamiliar planetary territory.

About 310 million years ago in what's now Arizona, a primitive creature trundled along on all fours through towering sand dunes that spilled into the sea. Normally, this creature's tracks would have vanished like other footfalls on a beach. But in a rare case, the tracks hardened into sandstone—preserving this flash of ancient behavior.

Rogue planets are the drifters of the galaxy, wandering interstellar space alone. Now it turns out they could have company in the form of moons — and perhaps even sustain life that hitched a ride on them.

Some bears hibernate in hollowed out tree-trunks. Some take a months-long rest beneath thick brambles and brush. Others dig into the hills to forge snug dens. And still others discover caves to hide away from the biting winter chill.

Speculation aside, there are valuable facts presented by the study, one of which is that we still have time to establish climate change policies to thwart catastrophic events, says UNLV geoscience professor and climate change expert Matthew Lachniet.

We all know that the worst part of going on holiday is waiting to get on the plane. Don't deny it.

On the rocky beach at Little Girls Point County Park in Michigan’s Upper Peninsula, the heavy wash of Lake Superior seeking the shore rolls stones the size of softballs back and forth in the surf.

In a lab at the Las Vegas Natural History Museum, researchers from UNLV are combing over fossils from a Columbian mammoth that was a real stand-up guy.

Fire-breathing dragons really capture the imagination — leading many writers to ponder just how such a creature might spew forth a torrent of flame. How do we square such a fantastic adaptation with real-life biology?

For 22 years, Maureen Stapleton has led the San Diego County Water Authority.

In just two decades, the agency’s first female general manager accomplished what generations of men had not: Under her leadership, San Diego acquired its own supplies of water.

Media reports describe Cape Town, South Africa, as a parched, barren land where the perfect combination of drought, climate change, a growing population and excessive water use has left officials counting down the days when the coastal city’s tap runs dry.

If someone wants to build a dragon, how can it be made to breathe fire? It seems that all the elements that can make a dragon breathe fire can be found in nature without the help of artificial flamethrowers.